A method is disclosed to control access to stored information. The method supplies a control unit in communication with a computing device and in communication with stored information. If the computing device requests access to that stored information, the method determines if access to the stored information is available. When access to the stored information becomes available, then the method reserves a communication pathway interconnecting the control unit and the requesting computing device, thereby disallowing the sending of non-MPLF unsolicited status via that reserved communication pathway, and provides a message to the computing device, using that reserved communication pathway, granting access to the stored information.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A control unit capable of communicating with a computing device and with stored information, comprising: a processor; a memory device in communication with said processor; a multi-path locking facility (“MPLF”) encoded in said memory device, wherein said processor uses said MPLF to reserve a communication pathway interconnecting said computing device and said control unit for use by MPLF attention interrupts only; and a suppression mitigation protocol, whereunder a non-MPLF interrupt may be sent to said computing device using said reserved communication pathway.
2. The control unit of claim 1 , further comprising: a plurality of unsolicited status suppression indicators; wherein if said MPLF disallows the sending of non-MPLF unsolicited status and messages to said computing device using said reserved communication pathway, the processor activates an unsolicited status suppression indicator associated with said reserved communication pathway.
3. The control unit of claim 2 , further comprising: a queue; wherein said MPLF enqueues in said queue a MPLF attention interrupt if access to said requested information is not available.
4. A data storage system comprising a control unit in communication with a computing device and in communication with an information storage medium, wherein said control unit comprises: a processor; a memory device in communication with said processor; a multi-path locking facility (“MPLF”) encoded in said memory device, wherein said processor uses said MPLF to reserve a communication pathway interconnecting said computing device and said control unit for use by MPLF attention interrupts only; and a suppression mitigation protocol, whereunder a non-MPLF interrupt may be sent to said computing device using said reserved communication pathway.
5. The data storage system of claim 4 , wherein said control unit further comprises: a plurality of unsolicited status suppression indicators; wherein if said MPLF disallows the sending of non-MPLF unsolicited status to said computing device using said reserved communication pathway, the processor activates an unsolicited status suppression indicator associated with said reserved communication pathway.
6. The data storage system of claim 5 , wherein said control unit further comprises: a queue; wherein said MPLF enqueues in said queue a MPLF attention interrupt if access to said requested information is not available.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
December 28, 2009
December 21, 2010
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